| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import "dart:async"; |
| import "package:unittest/unittest.dart"; |
| |
| main() { |
| test("stream iterator basic", () { |
| StreamController c = new StreamController(); |
| Stream s = c.stream; |
| StreamIterator i = new StreamIterator(s); |
| i.moveNext().then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(42, i.current); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(37, i.current); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isFalse); |
| })); |
| c.add(42); |
| c.add(37); |
| c.close(); |
| }); |
| |
| test("stream iterator prefilled", () { |
| StreamController c = new StreamController(); |
| c.add(42); |
| c.add(37); |
| c.close(); |
| Stream s = c.stream; |
| StreamIterator i = new StreamIterator(s); |
| i.moveNext().then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(42, i.current); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(37, i.current); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isFalse); |
| })); |
| }); |
| |
| test("stream iterator error", () { |
| StreamController c = new StreamController(); |
| Stream s = c.stream; |
| StreamIterator i = new StreamIterator(s); |
| i.moveNext().then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(42, i.current); |
| return i.moveNext(); |
| })).then((bool b) { |
| fail("Result not expected"); |
| }, onError: expectAsync1((e) { |
| expect("BAD", e); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isFalse); |
| })); |
| c.add(42); |
| c.addError("BAD"); |
| c.add(37); |
| c.close(); |
| }); |
| |
| test("stream iterator current/moveNext during move", () { |
| StreamController c = new StreamController(); |
| Stream s = c.stream; |
| StreamIterator i = new StreamIterator(s); |
| i.moveNext().then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(42, i.current); |
| new Timer(const Duration(milliseconds:100), expectAsync0(() { |
| expect(i.current, null); |
| expect(() { i.moveNext(); }, throws); |
| c.add(37); |
| c.close(); |
| })); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isTrue); |
| expect(37, i.current); |
| return i.moveNext(); |
| })).then(expectAsync1((bool b) { |
| expect(b, isFalse); |
| })); |
| c.add(42); |
| }); |
| } |